CN105310821A - Ultrasonic vitrectomy needle and device thereof - Google Patents

Ultrasonic vitrectomy needle and device thereof Download PDF

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Publication number
CN105310821A
CN105310821A CN201510249346.XA CN201510249346A CN105310821A CN 105310821 A CN105310821 A CN 105310821A CN 201510249346 A CN201510249346 A CN 201510249346A CN 105310821 A CN105310821 A CN 105310821A
Authority
CN
China
Prior art keywords
ultrasonic
needle tube
inner needle
needle
connector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510249346.XA
Other languages
Chinese (zh)
Inventor
颜忠余
骆威
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
In Order To Nuokang Medical Technology (suzhou) Co Ltd
Original Assignee
In Order To Nuokang Medical Technology (suzhou) Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by In Order To Nuokang Medical Technology (suzhou) Co Ltd filed Critical In Order To Nuokang Medical Technology (suzhou) Co Ltd
Priority to CN201510249346.XA priority Critical patent/CN105310821A/en
Publication of CN105310821A publication Critical patent/CN105310821A/en
Priority to PCT/CN2016/080452 priority patent/WO2016184300A1/en
Priority to US15/573,810 priority patent/US10682255B2/en
Pending legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/007—Methods or devices for eye surgery
    • A61F9/00736—Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments
    • A61F9/00745—Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments using mechanical vibrations, e.g. ultrasonic
    • A—HUMAN NECESSITIES
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    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/22004—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves
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    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/22004—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves
    • A61B17/22012—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves in direct contact with, or very close to, the obstruction or concrement
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    • A61B17/22004—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves
    • A61B17/22012—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves in direct contact with, or very close to, the obstruction or concrement
    • A61B17/2202—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves in direct contact with, or very close to, the obstruction or concrement the ultrasound transducer being inside patient's body at the distal end of the catheter
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    • A61B17/22022—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves in direct contact with, or very close to, the obstruction or concrement using electric discharge
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    • A61B17/22004—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves
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    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/22004—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves
    • A61B2017/22005—Effects, e.g. on tissue
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    • A61B17/22004—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves
    • A61B2017/22005—Effects, e.g. on tissue
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    • A61B17/22004—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves
    • A61B2017/22005—Effects, e.g. on tissue
    • A61B2017/22007—Cavitation or pseudocavitation, i.e. creation of gas bubbles generating a secondary shock wave when collapsing
    • A61B2017/22008—Cavitation or pseudocavitation, i.e. creation of gas bubbles generating a secondary shock wave when collapsing used or promoted
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    • A61B17/22004—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves
    • A61B2017/22005—Effects, e.g. on tissue
    • A61B2017/22007—Cavitation or pseudocavitation, i.e. creation of gas bubbles generating a secondary shock wave when collapsing
    • A61B2017/22009—Cavitation or pseudocavitation, i.e. creation of gas bubbles generating a secondary shock wave when collapsing reduced or prevented
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    • A61B17/22004—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves
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    • A61B17/22004—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves
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    • A61B2017/22014—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves in direct contact with, or very close to, the obstruction or concrement the ultrasound transducer being outside patient's body; with an ultrasound transmission member; with a wave guide; with a vibrated guide wire
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    • A61B2017/22014—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves in direct contact with, or very close to, the obstruction or concrement the ultrasound transducer being outside patient's body; with an ultrasound transmission member; with a wave guide; with a vibrated guide wire
    • A61B2017/22015—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves in direct contact with, or very close to, the obstruction or concrement the ultrasound transducer being outside patient's body; with an ultrasound transmission member; with a wave guide; with a vibrated guide wire with details of the transmission member
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    • A61B17/22004—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves
    • A61B17/22012—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves in direct contact with, or very close to, the obstruction or concrement
    • A61B2017/22014—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves in direct contact with, or very close to, the obstruction or concrement the ultrasound transducer being outside patient's body; with an ultrasound transmission member; with a wave guide; with a vibrated guide wire
    • A61B2017/22015—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves in direct contact with, or very close to, the obstruction or concrement the ultrasound transducer being outside patient's body; with an ultrasound transmission member; with a wave guide; with a vibrated guide wire with details of the transmission member
    • A61B2017/22017—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves in direct contact with, or very close to, the obstruction or concrement the ultrasound transducer being outside patient's body; with an ultrasound transmission member; with a wave guide; with a vibrated guide wire with details of the transmission member the ultrasonic transmitting members being fibres
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    • A61B17/22004—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves
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    • A61B2017/22014—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves in direct contact with, or very close to, the obstruction or concrement the ultrasound transducer being outside patient's body; with an ultrasound transmission member; with a wave guide; with a vibrated guide wire
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    • A61B17/22004—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves
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    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/22004—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves
    • A61B17/22012—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves in direct contact with, or very close to, the obstruction or concrement
    • A61B2017/22025—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves in direct contact with, or very close to, the obstruction or concrement applying a shock wave
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/22004—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves
    • A61B2017/22027—Features of transducers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/22004—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves
    • A61B2017/22027—Features of transducers
    • A61B2017/22028—Features of transducers arrays, e.g. phased arrays
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/84—Drainage tubes; Aspiration tips

Abstract

The invention discloses an ultrasonic vitrectomy needle and a device thereof used for eye vitreum gettering. The ultrasonic vitrectomy needle comprises a connecting body and an inner needle tube connected with the same, an outer needle sleeve sleeves on the periphery of the inner needle tube, length of the outer needle sleeve at the far end is slightly larger than that of the inner needle tube inside the outer needle sleeve, a closed pointless gentle top face is formed at the tail end of the far end of the outer needle sleeve, and an opening is formed in a far-end side wall, longer than the inner needle tube, of the outer needle sleeve to suck vitreum in. The ultrasonic vitrectomy needle has the advantages that a spindly hollow needle is designed for an ultrasonic system, and ultrasonic vitrectomy technology productization is made possible; due to noiselessness, small displacement, fluid repellency and viscosity lowering effect, operating safety is improved; an ultrasonic vitrectomy device and an ultrasonic cataract emulsifying device are integrated, so that cumbersome design of existing vitrectomy systems is simplified greatly, and great convenience is brought to ophthalmic operation while cost is saved.

Description

A kind of ultrasonic glass cuts syringe needle and device thereof
Technical field
The present invention relates to a kind of medical device and method thereof, be specifically related to a kind of ultrasonic glass blanking method and syringe needle thereof.
Background technology
Human eye converges focus on by making light transmission via cornea and carrying out image by crystalline lens, then shows image on vitreous body focuses on below retina.The quality focused on is determined by several factors, comprises the size and dimension of eyes, and cornea, crystalline lens, Vitrea transparency.
Vitreous body is positioned at the gel hyaline tissue of eyes rear end, when eyes generation disease, as retinal hemorrhage, retina shedding etc., needs to be absorbed by vitreous body with Vitrectomy.Conventional Vitrectomy apparatus includes glass and cuts handle, lighting tube, liquid injection pipe etc.It is pneumatic type that glass conventional in prior art cuts equipment, also has DYN dynamic on a small quantity, and these loaded down with trivial details devices all need corresponding special driving device to drive.In common ophthalmic surgical devices, Vitrectomy device is usually integrated on a machine with ultrasonic cataract emulsifier unit, so just makes that device volume is large, design is complicated, expensive and operation is inconvenient; And the operating frequency of pneumatic means is all in audiorange, noise is large, and crop mobile range is large.
In prior art, there is more phaco device, but rarer glass cutting apparatus.Until the ultrasonic glass be not still applicable at present cuts syringe needle, and the ultrasonic surgical apparatus be mated and ultrasonic handpiece drive elongated hollow needle to transmit the supersonic vibration of certain amplitude and can stretch into safely in vitreous body the effect reaching liquefaction, fragmentation safely.In order to solve the above problems, the present invention comes therefrom.
Summary of the invention
First aspect technical problem to be solved by this invention is to provide a kind of ultrasonic glass and cuts syringe needle, the commercialization of ultrasound wave incision technology is made to become possibility, utilize the repulsion-resistance and viscosity reducing effect of the noiselessness of supersonic vibration, micro-displacement, fluid, there is provided a kind of ultrasonic glass of safe and applicable to cut syringe needle, improve the degree of safety of operation.
For solving the technical problem of above-mentioned first aspect, the invention provides a kind of ultrasonic glass and cut syringe needle, it comprises connector and connected inner needle tube, its feature is, an outer needle cannula is also provided with in described inner needle tube periphery, described outer needle cannula is slightly longer than the inner needle tube of its inside in the length of far-end, and its distal tip is the mild end face of closed non-pointed, and the far-end sidewall that needle cannula grows inner needle tube is outside provided with an opening to suck vitreous body.
In the inventive solutions, be provided with groove in the inner needle tube periphery of described fastening part, described outer needle cannula near-end inserts described groove, and the contact position plastics material seal of outer needle cannula and described fastening part end face solidifies.The groove of far-end for accepting, adjusting, the center of stable outer needle cannula.
In the inventive solutions, gap is left between outer needle cannula inwall and the outer wall of inner needle tube.
In the inventive solutions, in described connector, be provided with the medium pore canal along the through connector of axis, medium pore canal has the shape adapted with inner needle tube, for holding described inner needle tube, and the central axes of connector and inner needle tube.
In the inventive solutions, outer needle cannula distal tip is closed plane, or the cambered surface of outwardly convex.Certainly can also be the mild top surface structure of other applicable non-pointed as well known to those skilled in the art.
In the inventive solutions, described connector comprises fastening part, and adjacent with fastening part threaded portion for being connected ultrasound-driven handle and end are for the tapered portion of fixing inner needle tube.Described fastening part is the acting surface of Wrench, there are the shape and size adapted with Wrench, described threaded portion is the external screw thread being arranged at described connector distal outer surface, described tapered portion is arranged on the near-end of described threaded portion, and described tapered portion is the bullet adapting to ultrasound-driven intracavity of handle.
In the inventive solutions, in described tapered portion, average mark is furnished with at least one otch, in order to lock inner needle tube.
The technical problem of second aspect to be solved by this invention, be to provide a kind of ultrasonic glass cutting apparatus, it ultrasonic glass comprised described in integrated ultrasonic emulsification equipment, ultrasound-driven handle and any one of claim 1-6 cuts syringe needle, ultrasonic glass is cut syringe needle and is connected with ultrasound-driven handle front end by connector, and ultrasound-driven handle is connected to ultrasonic emulsification equipment by cable.
In the inventive solutions, the inner threaded portion being provided with female thread and connector, ultrasound-driven handle front end is meshed.
In the inventive solutions, and be also provided with taper surface in the internal thread part front end of ultrasound-driven handle front end and match with the tapered portion of connector, to shrink the otch of tapered portion further, thus fixing inner needle tube.
The technical problem of the third aspect to be solved by this invention, be to provide a kind of using method of ultrasonic glass cutting apparatus, it comprises the steps:
(1) glass being cut syringe needle inserts in the vitreous body of eyeball, wherein, ultrasonic glass is cut syringe needle and is comprised connector and connected inner needle tube, an outer needle cannula is also provided with in described inner needle tube periphery, described outer needle cannula is slightly longer than the inner needle tube of its inside in the length of far-end, and its distal tip is the mild end face of closed non-pointed, and the far-end sidewall that needle cannula grows inner needle tube is outside provided with an opening
(2) open supersonic vibration switch, in the vitreous body of eyeball, the ultrasonic glass of supersonic vibration cuts syringe needle, this vibration cause inner needle tube vibration with emulsifying glass body, cut with ultrasonic glass the vitreous body that suction chamber that syringe needle fluid is communicated with carries out aspirating emulsifying.
Ultrasonic glass cutting apparatus of the present invention is compared with the glass incision technology of current pneumatic mode, and ultrasonic glass cutter has noise little, the features such as displacement is little, and is easy to be integrated on ultrasonic emulsification equipment conventional at present.Beneficial effect of the present invention is embodied in:
(1) for the design of the elongated hollow syringe needle of ultrasonic system, make the commercialization of ultrasound wave incision technology become possibility, the repulsion-resistance and viscosity reducing effect of the noiselessness of supersonic vibration, micro-displacement, fluid improves the degree of safety of operation;
(2) the ultrasonic glass of the present invention cuts the outer needle cannula remote design of syringe needle: the end of outer needle cannula far-end is the mild end face of closed non-pointed, and the distal side that outer needle cannula grows inner needle tube is provided with an opening to suck vitreous body; Closing mild end face is cause damage to stop supersonic vibration to pass to retina, and only has an opening enter in order to allow vitreous body in the distal side of trocar sheath.Solve existing ultrasonic needle distal end tip extremely sharply sharp, very easily the problem of penetrating tissue organ, reduces operation risk, improves the safety of operation.
(3) ultrasonic glass cutting apparatus and the integrated loaded down with trivial details design that enormously simplify current vitreous excision system of ultrasonic cataract emulsifier unit, provide greatly convenient for ophthalmologic operation and provide cost savings.
Accompanying drawing explanation
Fig. 1 is that the ultrasonic glass of one embodiment of the invention cuts syringe needle and ultrasound-driven handle front end syndeton schematic diagram.
Fig. 2 is the side structure schematic diagram that the ultrasonic glass of the present invention cuts syringe needle one embodiment.
Fig. 3 is the cross-sectional view that the ultrasonic glass of the present invention cuts syringe needle one embodiment.
Fig. 4 is the fastening part close-up schematic view of the connector of Fig. 3.
Fig. 5 A is connector cross-sectional view, and Fig. 5 B is Fig. 4 side structure schematic diagram, and Fig. 5 C is the Structure of cross section schematic diagram at the fastening part place of connector.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention will be described in more detail.
As Fig. 2-Fig. 4, Fig. 5 A, 5B, ultrasonic glass shown in 5C cuts syringe needle, ultrasonic glass is cut syringe needle and is comprised connector 50 and connected inner needle tube 60, the medium pore canal 55 along the through connector 50 of axis is provided with in connector, medium pore canal 55 has the shape adapted with inner needle tube 60, for holding described inner needle tube 60, a part for inner needle tube 60 inserts the medium pore canal 55 of connector 50, and the central axes of the two, another part of inner needle tube 60 is at the export-oriented remote extension of connector 50, an outer needle cannula 70 is also arranged with in this part of inner needle tube 60 periphery of union body outer 50, outer needle cannula 70 is slightly longer than the inner needle tube 60 of its inside in the length of far-end, and its distal tip 72 is mild planes of closed non-pointed, and the far-end sidewall that needle cannula 70 grows inner needle tube 60 is outside provided with an opening 71 to suck vitreous body.
In the preferred embodiment of the present invention, outer needle cannula 70 distal tip 72 can also be the cambered surface of outwardly convex.Certainly can also be the mild top surface structure of other applicable non-pointed as well known to those skilled in the art.
In the preferred embodiment of the present invention, the size of medium pore canal 55 slightly larger than the size of inner needle tube 60, for holding described inner needle tube 60; Medium pore canal 55 has the shape adapted with inner needle tube 60, as can be cylindrical, and polygon, as pentagon, hexagon, heptagon, octagon etc., and the central axes of connector and inner needle tube.
One embodiment connector 50 structure as shown in Fig. 4, Fig. 5 A, it comprises fastening part 51, and adjacent with fastening part 51 threaded portion 52 for being connected ultrasound-driven handle and end are for the tapered portion 53 of fixing inner needle tube.Described fastening part 51 is the acting surface of Wrench, there are the shape and size adapted with Wrench, described threaded portion 52 is the external screw threads being arranged at described connector 50 outer surface, described tapered portion 53 is arranged on the near-end of described threaded portion 52, described tapered portion 53 has the bullet adapting to ultrasound-driven intracavity of handle, in described tapered portion 53, average mark is furnished with at least one otch 54, in order to lock inner needle tube 60.
In the inventive solutions, be provided with groove 8 (Fig. 4,5) in inner needle tube 60 periphery of described fastening part 51, outer needle cannula 70 near-end inserts described groove 8, contact position plastics material 4 sealing and curing of outer needle cannula 70 and fastening part 51 end face.The groove 8 that fastening part 51 is established for accepting, adjusting, the center of stable outer needle cannula.Gap is left between outer needle cannula 70 inwall and inner needle tube 60 outer wall, like this when operating, only there is supersonic vibration in inner needle tube 60, and outer needle cannula 70 is not vibrated, can not cut down the output of supersonic vibration, gap length between the two can adjust according to concrete clinical needs.
Apply ultrasonic glass of the present invention when cutting syringe needle, the threaded portion 52 of connector 50 is engaged with the far-end female thread of ultrasound-driven handle, be screwed into the front end of ultrasound-driven handle by this threaded engagement by connector 50, the tapered portion 53 play the guiding role can adapt with the taper surface of ultrasound-driven handle inner and fit.Now, otch 54 shrinks because clamp-oning extruding in the process be screwed into, and namely the cone side of the taper surface of described tapered portion 53 is drawn in and is closely attached on the inwall of described ultrasound-driven handle.Due to the distortion of otch 54, the diameter of described medium pore canal 55 also can change.Like this, inner needle tube 60 is just coupled on connector 50 rigidly, and then is coupled on the far-end of ultrasound-driven handle, and thus supersonic vibration also passes to supersonic operation tool heads front end very effectively.
When applying ultrasonic glass cutting apparatus of the present invention, as shown in Figure 1, ultrasonic glass is cut syringe needle 100 by connector 50, as the aforementioned front end with ultrasound-driven handle 200 is connected, locking inner needle tube 60, ultrasound-driven handle cable is connected to ultrasonic emulsification equipment, and when the power source is turned on, supersonic vibration just can be passed to the far-end of inner needle tube 60 effectively by ultrasound-driven handle front end bar 201.Gap is left between outer needle cannula inwall and inner needle tube 60 outer wall, therefore, when operating, only inner needle tube generation supersonic vibration, and outer needle cannula is motionless.When vitreous body tissue because vacuum and eye intracavity hydraulic action are entered after in pipe by outer tube 70 side mouth 71, by the effect such as supersonic vibration fragmentation, liquefaction, viscosity reduction of interior pipe 60 far-end, glass physical ability, under lower suction force, is sucked out by the central suction channel 202 of interior tube chamber 60 and handle.
Be to be understood that, although this description is described according to embodiment, but not each embodiment only comprises an independently technical scheme, such as: inner needle tube 60 of the present invention can select medical metal material to prepare, medical resin can also be adopted to make, the length of inner needle tube 60 need design the output of not induced attenuation supersonic vibration in certain scope, in addition due to the particularity of glass incision technology, inner needle tube requires to have thinner diameter range, usually, below 500 μm, 200 μm-500 μm are preferably.And this inner needle tube, the material preparations such as metal, plastics, resin can be adopted, preferably adopt metal material preparation.
The ultrasonic glass cutting apparatus of one of application claims protection; it comprises integrated phaco device, ultrasound-driven handle and aforesaid ultrasonic glass and cuts syringe needle; ultrasonic glass is cut syringe needle and is engaged with the female thread of inside, ultrasound-driven handle front end by the external screw thread of the threaded portion 51 of connector 50; connect; and be also provided with taper surface in the internal thread part front end of ultrasound-driven handle front end and match with the tapered portion of connector; to shrink the otch of tapered portion further; thus fixing inner needle tube, ultrasound-driven handle is connected to ultrasonic emulsification equipment by cable.
Ultrasonic glass cutting apparatus of the present invention is when carrying out Vitrectomy, glass being cut syringe needle inserts in the vitreous body of eyeball, wherein, ultrasonic glass is cut syringe needle and is comprised connector and connected inner needle tube, also be provided with an outer needle cannula in described inner needle tube periphery, described outer needle cannula is slightly longer than the inner needle tube of its inside in the length of far-end, and its distal tip is the mild end face of closed non-pointed, and the far-end sidewall that needle cannula grows inner needle tube is outside provided with an opening
In the vitreous body of eyeball, the ultrasonic glass of supersonic vibration cuts syringe needle, this vibration cause inner needle tube vibration with emulsifying glass body, cut suction chamber that syringe needle fluid is communicated with to aspirate the vitreous body of emulsifying with ultrasonic glass.
The present invention is that Vitrectomy provides a kind of new thinking and countermeasure, is far superior in prior art by Vitrectomy that mechanical-pneumatic mode is carried out.Small and the viscosity reducing effect of supersonic vibration noiselessness, displacement improves the safety of operation.
More than show and describe ultimate principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not by the restriction of above-mentioned example; what describe in above-mentioned example and description just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.

Claims (10)

1. a ultrasonic glass cuts syringe needle, it comprises connector and connected inner needle tube, it is characterized in that, also overlap in described inner needle tube periphery and have an outer needle cannula, described outer needle cannula is slightly longer than the inner needle tube of its inside in the length of far-end, its distal tip is the mild end face of closed non-pointed, and the far-end sidewall that needle cannula grows inner needle tube is outside provided with an opening to suck vitreous body.
2. ultrasonic glass according to claim 1 cuts syringe needle, it is characterized in that, be provided with groove in the inner needle tube periphery of described connector, described outer needle cannula near-end inserts described groove, and the contact position plastics material seal of outer needle cannula and described connector end face solidifies.
3. ultrasonic glass according to claim 1 cuts syringe needle, it is characterized in that, leaves gap between outer needle cannula inwall and the outer wall of inner needle tube.
4. ultrasonic glass according to claim 1 cuts syringe needle, it is characterized in that, in described connector, be provided with the medium pore canal along the through connector of axis, medium pore canal has the shape adapted with inner needle tube, for holding described inner needle tube, and the central axes of connector and inner needle tube.
5. ultrasonic glass according to claim 1 cuts syringe needle, it is characterized in that, outer needle cannula distal tip is closed plane, or the cambered surface of the outwardly convex closed.
6. ultrasonic glass according to claim 1 cuts syringe needle, it is characterized in that, described metal connector comprises fastening part, and the threaded portion adjacent with fastening part and end are used for the tapered portion of fixing inner needle tube.
7. ultrasonic glass according to claim 6 cuts syringe needle, it is characterized in that, in described tapered portion, average mark is furnished with at least one otch, in order to lock inner needle tube.
8. a ultrasonic glass cutting apparatus, it ultrasonic glass comprised described in integrated ultrasonic emulsification equipment, ultrasound-driven handle and any one of claim 1-7 cuts syringe needle, ultrasonic glass is cut syringe needle and is connected with ultrasound-driven handle front end by connector, and ultrasound-driven handle is connected to ultrasonic emulsification equipment by cable.
9. ultrasonic glass cutting apparatus according to claim 8, it is characterized in that, the threaded portion that inside, ultrasound-driven handle front end is provided with female thread and connector is meshed, and be also provided with taper surface in the internal thread part front end of ultrasound-driven handle front end and match with the tapered portion of connector, to shrink the otch of tapered portion further, thus fixing inner needle tube.
10. a using method for ultrasonic glass cutting apparatus according to claim 8, it comprises the steps:
(1) glass being cut syringe needle inserts in the vitreous body of eyeball, wherein, ultrasonic glass is cut syringe needle and is comprised connector and connected inner needle tube, an outer needle cannula is also provided with in described inner needle tube periphery, described outer needle cannula is slightly longer than the inner needle tube of its inside in the length of far-end, and its distal tip is the mild end face of closed non-pointed, and the far-end sidewall that needle cannula grows inner needle tube is outside provided with an opening
(2) open supersonic vibration switch, in the vitreous body of eyeball, the ultrasonic glass of supersonic vibration cuts syringe needle, this vibration cause inner needle tube vibration with emulsifying glass body, cut with ultrasonic glass the vitreous body that suction chamber that syringe needle fluid is communicated with carries out aspirating emulsifying.
CN201510249346.XA 2015-05-15 2015-05-15 Ultrasonic vitrectomy needle and device thereof Pending CN105310821A (en)

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PCT/CN2016/080452 WO2016184300A1 (en) 2015-05-15 2016-04-28 Ultrasonic vitrectomy probe and device thereof
US15/573,810 US10682255B2 (en) 2015-05-15 2016-04-28 Ultrasonic needle and apparatus applied for vitrectomy

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